boner train

the medical miracle that describes the synchronization of many men's erections stimulated by a non-sexual event

Is there a boner train going on right now? I can see a few pairs of tight pants?

train baby

Offspring of two trains.

Look, those two trains made a train baby

bae-train

a bunch of girls or guys all trying to get at the same person following him/her as though he/she is the engine and they are the cars hooked onto it.

Jeremy: "How's your bae-train going?"
Jesse: "Terrible, they wont stop following me and making my dream girl not like me."
Jeremy: "You might be on her bae-train too, she is gorgeous."

Bubble-Train

In the World of Warcraft, where two or more Paladins run through a series of high-damage or deadly areas and protect everyone behind them as they take damage or death effects with immunity from Divine Shield

"Hey Rothinzil! Start a bubble-train so we can go through the oozes after we down patchwerk. It'll protect the rest of the raid!"

Basic training

A series of courses offered by the military in which the instructor has a few months to fix 18 years worth of your parents fuck ups.

Your mommy will not be there when you get to basic training.

why train

When you reply to a answer or statement by simply saying 'why'
When you get your second answer, you'll just answer 'why' again, and so on.

Put simply; a good way to annoy someone.

"You know what? I'm going to get the teacher annoyed with a why train."
--
"So, Why is school cancelled this friday?"
"It's because we need to do Professional development."
"Why?"
"Because teachers need to learn as well."
"Why?"
"Because we don't know everything."
"But Why?"

train gang

A gang with 4 or more members
Example

G-train
K-train
And the legendary F-train

What’s up guys train gang here today I find the legendary cure for cancer